Concrete-pipe machine



y lyk LQIME; Minid "j F. im U ENTE CONCRETE PIPE MACHINE Filed Aug. 6, 1921 5 SheetS-Shee't 2 Mm' MME f3. 1F. @MENTE CONCRETE PIPE MACHINE Filed Aug` 6, 1921 www@ 5 Sheets-Sheet 3 C. IF. HUIENTIIE CONCRETE PIPE MACHINE Filed Aug. 6, 1921 5 Sheets-Sheet 4 Mw L w23. mm@

. C. F. `IEHJENTE CONCRETE PIPE MACHINE Filed Aug. 6, 1921 5 Sheets-Sheet 5 "iii Htl

EIRLEH F. FUENTE, UF llmlllllllll'hthlm, FFNNSWLWMNFM.

tarification died telenet t, lhttl. tlerial lll'o. wwwa.

To all Iwhom z't may concern.'

lBe it known that l, Crimine F. Berlare, a citizen of the lllnited States, residing at Pittsburgh, in the county oit Allegheny and IState @it Pennsylvania, have invented a new and useful lmproveinent in Concrete-Fips Machines, of which the following is a tull1 clear, and exact description.

ll/ly invention relates to concrete pipe machines.

An object of my invention is such a machine oit simplified construction wherein the parts are accessible for repair and adjustnient.

Il further object ot' my invention is such a machine wherein a plurality of tampers are used with means provided tor renderinger certain ot said tampers ineltective at certain stages ot the operation ot the inachine.

A turther object ot my invention is such a machine wherein the tampinp; -ellect is uniformly produced with such machine in the manufacture of pipes ot varyingr diameter and thickness ct' shell.

t further object ot' my invention is such a machine wherein the torce for operating;r the taniping means is applied siihstaiitially in line with the tampinp,r torce so as t0 eliini nate side strains in any direction.

et tiirther ohject oit my invention is such an arrangement wherein the tai'npinpr box is lguided as distinguished trom duidingr the tampers themselves.

Il further ohject ot" my invention is such a machine wherein the -triction hox flor holding the tampers is centralized laten alh7 and transversely with respect to the operating" means, so as to completely avoid vibration ot' the tampers.

jt further ohject ot my invention is such a machine wherein the core shalt operating means is provided with anti-friction devices so as to reduce the triction encountered in the operation ot the core shalt.

It tui-ther ohject of my invention is such a device wherein the core shalt is provided with means for increasingi the area ot' contact between the shat't and the guide.

it further ohiect ot. my invention is such a device wherein the core is rotated in the same direction as the mold, lout at a slower speed. l

/t tiirther ohiect ot my invention is such a device wherein a split gear is used it'or operatingF the device so that gears ot diillt'erent diameters may be easily applied with the result that a definite lineal movement is given to the concrete tor each blow ot the tampingF devices.

it iturther object oit my invention is such a device wherein the operatingr speed for the mold and core is so proportioned with respect to the feeding device as to get a uniform tampingr e'ect throughout the area ot pipes of different diameters and shell thiclrness.

:t further object of my invention is such a machine wherein a hell cap is provided havine,r portions permitting tampers to pass therethrough during the formation ot the shell; a further portion t0 act as a core during the toi-mation of the bell ot the pipe and a further portion having the incidental ettect of renderingr some of the tampers inetectivc during,r the formation ot the hell.

Further objects will he apparent to those skilled in the art upon reading the tollowing description taken in connection with the accompanying drawings, and in which:

Figure l is a front elevation of a machine embodyingr my invention and showingi one of the molds in section;

Figure 2 is an end elevation of the machine shown in Figure l;

Figure 3 is a partial section and side ele ration showingr the tampers and the operatinn means therefor on an enlarged scale;

Figure t is a sectional elevation ot the feeding device;

Fir". 5 is a section on line V-V ot Figure 3;

Figure 6 is a view similar to Figure 5 wherein the hell n cap has heen rotated 90; l Figure 'l is a plan view ot the core shaitt and 4means tor operatingI the same;

Figure 8 is a section on line Fill-Will oit Figure 7;

Fi 2eure 9 is an elevation ot' thetamper hon and means for operatingr the same.

Referringr to the drawings, Figure l shows a device comprisingr a turn tahle l on which are placed two molds 2 and 3. The molds are mounted on mold hases l which are provided underneath with ,e'ear teeth meshing with the pinion 5 and hy which the said molds are rotated. "llhe molds rotate around a center pin ti. I'lhe turn tahle l is held in place hv a pin t entering a suitahle open ing :tor the center pin 6 and operated hy a lltl handle 8. The turn table 1 is mounted on balls 9 and mold bases 4 are similarly mounted on balls 10 for the purpose of rendering the same easily rotated. The gear 5 is mounted on a shaft 11 which is provided with a split gear 12, meshing with the pinion 13. The gear 13 is mounted on a driving shaft 14 which drives a pulley on the shaft 16 through the belt 15 for operating the tam ing means to be later described.

l\ ounted on the shaft 14 is a sprocket 17. A chain 18 passes over the sprocket 17 and also over a sprocket 19, as shown in Figures 2 and 4. The sprocket 19 is mounted on a shaft 20, carrying a gear 2Oa meshing with a gear 20b on the shaft 20. The shaft 20 carries blades 21 in a trough 22 for feeding the mixed concrete into the mold. The shaft 20 is provided at the endl of the trough 22 with a rotary cutter 21a which delivers a ribbon of concrete of uniform area into the trough 80, which is provided with a sere-vv conveyor 81 operated from the shaft 2Oc through sprockets and'chain 82.

Vhen it is desired'to feed concrete into a mold of smaller diameter than that shown in Figure 2, the gears 20 and 2Ob are removed from their respective shafts and gears 83 and 84, both illustrated in dotted lines in Figure 2, are substituted, whereupon the screw conveyor and the shaft 20c and the other members of the feeding mechanism are moved to the left to the dotted line position shown in Figure 2. The concrete is placed in the hopper 23 and the entire feeding device is carried by channels 23, as shown in detail in Figure 4.

The driving shaft 14 is also provided with a clutch 25 for operatively connecting the sprocket 17 to the shaft 14, that is to say,.

when the clutch is closed the sprocket 17 rotates with the shaft 14 and when the clutch is open the sprocket does not rotate with the shaft 14. The shaft 14 is driven from any suitable source of power connected with the gear 26 which is connected to the shaft 14 through a clutch 27. The shaft 14 carries a clutch 28, one side of which clutch is connected with a gear 29 loosely mounted on the shaft 14. The gear 29 meshes with a gear 30 loosely mounted on the shaft 11 but rigidly connected to a smaller gear 31. The gear 31 meshes with a larger gear 32 loosely mounted on the shaft 14`but rigidly connected to a drum 33 also loosely mounted on the shaft 14 and-aroundwhich a cable 34 is wound for a purpose to be later described.

Rigidly mounted to the shaft 11 is a sprocket 35 over which passes a chain 36 for connecting the shaft 11 with the shaft 37. Mounted on the shaft 37 is a bevel gear 38 meshing with a larger bevel gear 39 slidably connectedwith the core shaft 40.

Mounted inside the mold 3 is a core 41 connectedr with the core shaft 40 and mount- Aed on balls 42.- .Ii-The core-41 is rotated in the same direction as the mold 3 but at a slower speed. The regulation of this rotation is effected through the sprocket 35, chain 36, shaft 37 and gears 38, 39 and shaft 40.

rIhe core 41 has attached thereto cables 43, best shown in Figures 1 and 7. The cables 43 pass over sheaves 44 and 45. The sheaves 44 are connected tov the frame 46 and the sheaves 45 to a movable cross-head 47 also carrying a sheave 4S. A sheave 49 is mounted on the frame 46 and a sheave 5() is also carried by said frame. The cable 34 passes from the drum 33, as shown in Figure 1, over the sheave 49 and from there around the sheave 48 and then around the.

sheave 50 and is attached to the movable cross-head 47 at 51. The ends of the cables 43 are attached to the frame 46 at 52. When it is desired to raise the core 41 from the mold, the drum 33 is rotated and the cable 34 moves the cross-head 47 to the left, as shown in Figure 7, thus raising the core through the cables 43.

The friction between the core and the concrete is very great and therefore a large force is necessary to raise the core out of the concrete. The core shaft 40 is mounted in a guide 53, shown in detail in Figure 8. The shaft 40 is provided with extensions 54, one of said extensions being on and in line with each face of the shaft so as to increase the contact area of each face of said shaft with respect to the guide. Mounted in the guide 53 and in contact with the face of the core shaft (the face includes the shaft and the extension thereon) are a plurality of rollers shown in plan view in Figure 7 and in sectional elevation in Figure 8. The arrangement of the core shaft with its extended faces and the anti-friction rollers in the guide greatly reduces the friction between the core shaft and the guide and thereby decreases the force necessary to raise the core. thus greatly adding to the ease and satisfaction of operation of the device.

The tampers 56 are mounted in a friction box 57, each of the tampers 56 being uniformly supported Withrelation to the friction box by placing a spacing member 58 between the adjacent tampers. A spring 59 bears against the outside of one of the tampers and is put under compression by means of a cam 60 operated by a handle 61.

The tamping movement of the tampers is imparted thereto by a train of gears shown in Figure 9. The gear 62 is mounted on the shaft 16, and meshes with a similar gear 63. The gear 62 meshes with the gear 64 and the gear 63 with the gear 65. The gears 64 and 65 are mounted on shafts 66 and 67 respectively, which carry fly Wheels 68 and 69 respectively. Connected with the fly wheel 68 is a link and connected with the fly wheel 69 is a link 71. The links 70 and 71 are lll) lll

iaaaaaa pivotally connected to the friction boa bfi as shown in Figure 9. da shown in Fire l the linlr 7U t also link 7l not shown in Figure t) are connected to the friction boa 57 centrally of the tamping members and as shown in Figure 9 one of the linlrs is connected to each side of the friction bon so that the tamping power is applied to the tampers in line with the tamping force or the reaction force produced when the tampers strike the concrete. 'lhis arrangement' is important as it completely eliminates vibration from the tamping means.

The friction boa 57 is guided in its reciprocating movement by guide rods 72 and it will be noted that the tamping members themselves are not guided other than by the friction bon.

'l`he relation of the tampers to the concrete pipe is shown in Figure 3 during the formation of the body of the shell. lis the pipe is built up the tampersare automatically pushed upward and when the pipe reaches the bell portion it is necessary to move the tampers to the left. This is accomplished by rotating the hand wheel 73 in the proper direction to cause the channel 7l, which carries the tamping mechanism to be moved to the left, thus ymoving the tampers to the left also. lhe channel 7a is slidably mounted in the uprights 75 of the machine.

During the finishing operation and for a considerable distance prior thereto, it becomes necessary to eliminate-or render inef fective one or two of the tampers because the pipe at its upper end becomes narrower than the body of the shell. ln order to edect this a bell cap 76 is rotatably mounted on top of the core around the core shaft lO. Durin the formation of the body of the shell the bell cap 76 is in the position shown in Figure 5. 'lhat is to say the opening thereinpermits the tampers to pass therethrough'into contact with the concrete. The cap is held in the position shown by a spring pressed lpin 77 engaging a notch 77 in a sleeve 78 held against rotation by an angle 78a. When it is desired to form the bell of the pipe the pin 77 is pulled outwardly and the bell cap 76 is rotated in a clockwise direction to the position shown in Figure 6. 'llhis rotation rings a portion 7 6 of the bell cap into position so that it acts as a core to support the interior portion of the concrete forming the bell of the pipe in the region of the tampers. lis the beveled portion 79 comes under the tampers, one or more of the same thereafter engage the bell capi and are not permitted to pass into contact with the concrete so that only one or two of the tampers are ed'ective in tamping the concrete to form the bell. lt will be noted that as shown in Figure 6 the tampers have been moved outwardly radially by operating the hand wheel 73., due to the increased diameter of the pipe at that portion thereof. lhe portieri fdl of the bell cap is used as a 66slielrer99 toootli o the top of the pipa.

"fhe operation of my machine is as follows Y lllith the gear la of a suitable site selected according to the diameter of the pipe to be made., the machine is started after one of the molds 3 has been moved into the position shown in Figure l. .lhe starting of the ma chine causes the rotation of the mold 3 through the gears 13, l2 and 5. 'lhe sprocket f7 is rotated upon the closing of the clutch 25. pll`his in turn rotates the feeder 2l and causes the concrete to be fed into the mold..

'l`he tampers are moved into the proper position by the proper operation of the hand wheel 73 and are operated by means of the belt l5 through the mechanism shown in Figure 9. 'lhe arrangement of the drivin means for the mold and the tampers is such that each blow of the tamping means slightly overlaps each preceding blow thereof so as to produce a substantially equal tamping eifect per unit area.

rll`he core of the mold is rotated in the same direction as the mold by friction with the concrete, but is held to a lower speed through the sprocket 35, chain 36 and shaft 37 and the core shaft l0. v

his operation is continued until the body of the shell is formed. When the bell is reached the tampers are moved outwardly radially by operating the hand wheel 73 in proper direction and when the dange or upper part of the bell is reached the pin 77 is pulled outwardly to allow the bell cap 76 to rotate from the position shown in Figure 5 to that shown in Figure 6 to place a core in the region of the tampers and also rendering two (for illustration) of the tampers ineffective. lll/hen the bell is completed the clutch 25 is operated to disconnect the feeding mechanism and the mold and core are rotated a few times to allow the portion 76b to smooth olf the top of the bell as it passes under that part of the bell cap.

ln order to remove the core from the pipe the clutch 28 is closed., thus rotating the drum 33 and winding the cable 3l thereon. ll`he winding of the cable 3l on the drum draws the cross-head 47 to the left as shown in Figure 7. thus raising the core and core shaft through the cables d3. is carried out while the mold and core are rotated so as to snlooth the interior of the pipe and also this rotative movement decreases the power necessary to raise the core. iltfer the core is removed. the turn table l is rotated andthe mold 3 may be removed from the table l to desired point and from which the pine section may be removed. and during the rotation of the table l the mold 2 is brought into position lf it is desired 'to maire a pipe of a diamlfd lll

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lltlll lllll lill 'lhis operation lilla movement thereto of substantially the same Y speed as the arrangement shown in the drawings. Assuming that a smaller pipe than that shown in the drawings is be made, a larger set of gears 83 and 84 will be placed on the feeding device so that the rate of feed of concrete to the mold will be slower than with the arrangement shown in full lines in the drawings. The arrangement is such that the rate of rotation of the mold and the rate of feed to the mold are so coordinated with respect to the tamping means and the diameter and shell thickness of the pipe being made that a uniform tamping effect is produced per unit area of concrete entering into the construction of the pipe.

In making certain classes of pipe and in pipes of various classes in certain large diameters, it is frequently desirable to reinforce the shell. With my arrangement this may be done easily by placing the reinforcing means in position in the shell so that adjacent tampers may operate on the concrete at the sides of the reinforcing means.

If it is desired to have some of the tamping means further apart than others so as to permit them to operate on adjacent sides of the reinforcing means, the spacing y blocks 58 between the adjacent tampers may vary in thickness so as to permit of this operation.

My invention has manyadvantages which result from the construction shown and described, and vwhereby a plurality of tampers may be used, all of said tampers having uniform tamping effect; means are provided for eliminating some of the tampers when desired; pipe of varying thickness and of uniform density may be produced; the pipe may be reinforced to strengthen the same; the tamping box is guided as distinguished from guiding the tampers; the friction box for the tainpers is centralized laterallyv and transversely, thus avoiding vibration of the tampers; vmeans are provided for rendering the removal of the core much less difiicult than heretofore; the lineal movement of the pipe shell is uniform for all sizes and the rate of feed varies inversely with the revoliitions per minute of the mold, so as to produce uniform tamping effect per unit area of the concrete and a bell can is provided which may remain in position during the entire operation of making the pipe, it being necessary1 to only rotate the bell cap during the formation of certain parts of the pipe.

Many other advantages will be apparent to those skilled in the art.

While I have shown and described in detail one embodiment of my invention, I desire it to be understood that I do not limit myself to the exact device shown and described, as many changes may be made in the details without departing from the spirit of m invention.

I c aim:

1. In a concrete pipe machine, the combination of a mold, a core therefor, means for rotating said mold, means for causing a relative rotative movement between said mold and core, means for maintaining a uniform feed of concrete into said mold in the formation of one size of pipe, and means whereby .the rate of rotation of said mold may be varied and the rate of feed varied inversely to the rate of rotation of the mold in the formation of another size of pipe.

2. In a concrete pipe machine, the combination of a mold, a core therefor, means for feeding concrete into said mold, means for causing a relative rotative movement be tween said mold and core, and means whereby the rotation of the mold may be varied to provide substantially constant lineal speed to the periphery of molds of different diameters.

3. In a concrete pipe machine, a mold, a core therefor, and a composite tamper comprising a series of simultaneously and relatively individually movable coacting elements, substantially as described.

4. In a concrete pipe machine, the combination of a mold, a core therefor, and a composite tamper composed of a plurality of individually supported elements for operation in said mold.

5. In a concrete pipe machine, the combination of a mold, a core therefor, and a composite temper composed of a plurality of spaced individual elements supported by friction for operating at varying points in said mold.

6. In a concrete pipe machine, the combination of a mold, a core therefor, a composite tamper, and means for rendering some of the tamping elements ineffective.

7. In a concrete pipe machine, the combination of a mold, a core therefor, a tamper composed of a plurality of individually supported co-acting elements for operation in said mold, and means for rendering some of said elements ineffective.

8. In a concrete pipe machine, the combination of a mold, a core therefor, a tamper composed of a plurality of spaced individual elements supported by friction for operating at varying adjacent points in said mold, and means for rendering some of said elements ineffective.

9. In a concrete pipe machine, the combination of a mold, a bell cap for said mold, a core for fsaid mold, a composite tamper comprising a plurality of elements, and means on the bell cap for rendering some of said elements ineffective.

1f). In a concrete pipe machine, the combination of a mold, a core therefor, tamping ifnmnnn menne iol' nppiying opemiivc ponen io smid.

vhoidieiIl snhsinniiniiy niong ihn iline oi:D ihe ii. in n conci'ehe pipe miichine, Gine coinhiniiiion oi o, moildi, n cone isheneioi", inmping menns, n. Iholder foi mid mmpingn menne, menno for iippiyinw opeiniive ponen izo midi hoidei euhsliontiaiiigr niong vihn iine ci ihn inmping ioice, mnd guiding4 menne ici enici hohiei.

in.. iin n concieie pipe machine, n moidi, n coi'e ihei'cioi, n nhnii conneciedl io ishe coin miti i'ofiiicii by ii'iciion hei/Ween the coie ond the concieie hemp; molded, n guide Vion seid ohnii; hnvinpg' nniii'riciion menne helinleen ihn shnit ond the pgnide, nndi moons for coniioiiinp; ihe rohdion oi sind shnii: while inisingi; ihe coic oui oi' ihe concieie in the mold, snhsinniiaiiiy ns described.

i3, in n concieie pipe mnchinmihe comhinnii'on oih n mold, n cone ihei'eioi, n polyp; onni nhniii conneciedi io .the coic, o guide ion @nid ehnifi hmrinign nniiii'iciion enne heineen ihe ehni'i; ond ihe guide, nndl menno ion conizioiiing 1th@ ioiniion oi sind silnii while inininp ihe coi'e oni; oi conci'eie in @nidi moioi..

M?, in ii concieie pipe mnchine, ihe comhinniion oi n incid, n coi'e ihei'eion n opinie nhniii connected io izhe conc, n ,ignidie ion iho nhni'p, nnii-ii'iciion lmenne heineen nnidl 'nnid guide nndl mid ns denciihedi.,

iiiii pnidle sind shiiii, ond menno. ici'- coni'ivoiliin ihn imeiniive'ioiniion between iho coi'e on concneie in the moidl endl mining ihe'conn.

' idyfiin n conci'eie pipe mnchine, n moidl, o cm'e ihcieioi, o shni'i connecieci no ihe cone, n pinmiiiy oi op osiiseiy enendling vpi'ojeoiionsi on @nidi ehnili, n guide ion mici ehnii, nndl nnii-ii'iciion menne hein/een midi guide ond midi piojeciiono, enhniznniiniiy ne dencnihedh Y in.. .in n conci'eie ipe mnchine, n moid, n coieiheieioi', n o ygonni ehnii; connected. io ihn coie, n p ninhiy ci opponiieiy ei:- ieiig pioJeciione on enid nhnii., n guide i'oi sind ishnii, nnd nnii-iniciionmenns heiween pnojeciiono, cnheiiiniiy N., in n conci'eic pipo mnchine, n mohi, o coie ihci'eioi, n comme ehniiiifconneciicd io ihn cone, n pininiliiy oi opposiieip7 eniending' piojeciionn on mid chnii, n pniiie ion midi Y ihn-ii, nndi nnii-i'iiciion conn heineen mid initie omi said! projeciions, snhsinniiniip ns descrihed. Viii. in n conci'eite pipe `mnchine, ihe combinniion ci 1i i'oininhie mold, n coie iheieioi', innnpinp1 ineens therefor, and n heli clip pi'ovided with ai poiiion ioi` noting :is ai coi'e dun ingiI ille ioi'inaiiion of iahc heli ci the pipe.

19. in n concrete pipe machine, the comhinoiion oi n mohi, nvcoi'e `ithei'eioi, inmping nieims ioi operation..iieiwecnsind incid nnoi core, anni n bell cop having n poijixon foi' neilng,n ais ai core dni-ini;r the formation oi n heli 'ond iinoihcn poiiion neiing'vio sinooih ond finish the end oi the pipe,I m

20. in n. conci-ete pipe innchine; the com. hinziiion of e inoidl, n core therefor, himping* menne i'oi operating between said moldi sind core, mui'gi heiLnp peimiiiinp; snd. inmping menne io opeimhe therethrough nnoi hoving n poiiion acting ns: n core during they ipe anni n por i'oimniion of the heil oiiihe iion :icim smooihimg1 nndi finishing Itho endl oi the pipe.- l

21, in n conciieie pipe nin/chine oi the type wherein ihei'e is ii mold aiiidl n core ioi` foiming ihe sheii oi ihepipe nndi inmpei's ici` inmping the concrete, ihe comhinsiiion ofi n heii cop provided niizh menns nciing sin n core ion ioimaiiim oi ihn heli nnfi. ion hnishing midi gmooihingg ihnend. oit ihe pipe.

22. n n concieie pipe mnchine oi ihe hype whciein inhei'e is n mohi ondi n coie ionioiming Itho sheii oi* ihc ipe nndi nimpeii,n iol' humping the conci'ehe, i e comhinniion nii ai roiahihle heli cop peimiiiinpg izhe possono izhei'eithiongh of ihe himping means in one position oi ihe 'belli caip mnd ncizing ns n core in ijhe region oi ihe inmping; during ihe ii'oi'mniion of ihe heil.,

23. in n concieio pipe innchineoi the iype wherein izhei'o is n moioi end ny coie ion ioi'ming ihe sheii oi ihe pipe nndi iompers ioi inmpine' oi n noioizoiiie heli clip permitting the pnesnge therethrough of the pumping menne. inl

yonnn in nnnn'in.

ihe concrete, the comhinoiion dingl 

